4 THE NAUTILUS. 



This species resembles L. matildae Dohrn,and may eventually be 

 classed as a variety of that species. The peculiar color markings 

 constituting the chief differences. The red color within is always 

 present. Over 60 specimens received. 

 Diplommatina liwaensis n. sp. PI. I, figs. 3, 4. 



Shell dextral, fusiform, thin, sculpture fine and close, covering all 

 the whorls, color pale brown, whorls rounded, apex not acuminate, 

 suture impressed, whorls seven, antipenult. largest, constriction in 

 front. Aperture ovate, outer lip reflected, columellar tootli small. 



Maj. diam. If mm., alt. 4 mm. 



Locality : Liwa, at 4,000 ft. altitude. 



Close to D. gracilis Beddome, but has much finer sculpture, is 

 larger and has one more whorl. 



ON A NEW SPECIES OF FUSUS FROM CALIFORNIA. 



BY WM. H. DALL. 



Fusus Roperi n. sp. 



Shell small, rather short and wide, with a short, subacute spire 

 and about six whorls ; color ferruginous brown, faintly spirally 

 zoned and lighter on the siphonal fascicle, pillar and throat whitish, 

 outer lip between the white of the throat and the margin showing 

 narrow spiral brown lines on a yellowish ground, whorls with a ten- 

 dency to a white, narrow peripheral line most evident on the sum- 

 mits of the ribs; whorls excavated behind, somewhat rounded before 

 the periphery, the margin at the suture strongly appressed with the 

 whorl in front of it somewhat constricted ; suture distinct, hardly 

 undulated, the spiral thread in front of it slightly minutely imbri- 

 cated ; axially directed sculpture of finely wrinkled silky incremen- 

 tal lines and (on the last whorl) nine rounded ribs with rather 

 wider interspaces, the ribs are obsolete near the suture, on the early 

 whorls, and on the base; spiral sculpture of numerous flat strap- 

 like threads with the interspaces much narrower and sharply reicu- 

 lated by the incremental sculpture which rises in the interspaces 

 nearly to the level of the tops of the threads ; the nucleus (lost) is 

 small, the first two or three whorls are more coarsely reticulate than 

 the later ones ; aperture elongated and insensibly passing into a 

 rather wide and short canal ; siphonal fasciole rather marked, 



